Log message:
*: add LDFLAGS overide that was previously in mk

This is a workaround and should be fixed properly per-package - they
should use the pkgsrc LDFLAGS, but this restores what happened
before the mk/ cleanup.

Fixes relro build for packages that do not honor LDFLAGS.

Package list provided by mef@, thanks!

Workaround commit requested by bsiegert on tech-pkg.

Log message:
Update to 1.3.13

Upstream changes:
1.3.13:
Changes:

- new constructors: BrowserInformation, TexParser,
   ModularU32MatrixOperations, AIntervalCategory, AInterval,
   PadeContinuousFraction.

- changes to conditions and exports.

- new implementation of IndexCard.

- better support for pure Lisp build.

Bug fixes, in particular:

- fixed wrong initialization of number of rows and columns for
   two dimensional arrays.

- corrected result of integrals in terms of elliptic functions.

- corrected stirling numbers at 0.

- fixed map between matrices with differing minimal indices.

- interpreter now avoids strange types.

- more consistent handling of pathnames.

1.3.12:
Changes:

- Added Berkowitz algorithm for computing characteristic polynomial
  in general case

- 'rootSplit' and 'rootFactor' now handle nested roots

- Terminal emulator used by FriCAS is now setable via
  environment variables

Bug fixes, in particular:

- Fixed several problem with handling type conditions in HyperDoc

- Fixed coercion from expressions to algebraic numbers

- Fixed artihmetic in FourierSeries

1.3.11:
Changes:

- Implemented numeric 'riemannZeta'.

- Improved 'radicalSolve' for degree 4 polynomials.

- Improved FriCAS Book.

- Old factorizers for univariate polynomials over finite fields
  are removed.

- 'simplifyExp' supports more kinds of expressions.

- Small improvements to Spad compiler.

Bug fixes, in particular:

- Implemented inverse trigonometric and hyperbolic functions for power
  series at branch points.

- HyperDoc launched by ')hd' now properly exits when FriCAS quits.

- ')display op groebner' now works.

- Prevent exits from page viewer when content is less than one page.

- Fixed HyperDoc logical search.

- Various build fixes.

1.3.10:
Changes:

- New package for root denesting.

- New convenience package containing Unicode symbols.

- Improvements to runtime accounting subsystem, in particular
  FriCAS can now print info about storage use.

- Improved handling of roots during integration.

- Improved 'simplifyExp'.

- Domain Pi is renamed to PiDomain.

- Added Lisp version to FriCAS banner.

Bug fixes, in particular:

- Disabled splitting of roots by default simplifications.

- Fixed various build problems.

- Fixed wrong creation of sparse power series.

- Fixed problem with derivatives of unevaluated definite integrals.

1.3.9:
- Distributed binary includes support for jfricas.

- Construct of tagged unions by specifying tag.

- New category Hashable.

- AlgebraGivenByStructuralConstants now more general and
      has FreeModuleCategory.

- Rename 'escape' in Character to 'underscore'.

Bug fixes, in particular:

- Fixed power series expander for 'polylog' at 0.

- Fixed storing complex data, in particular streams in files.

- Fixed varius build problems, in particular build with
  sbcl-2.3.2 and newer.

- Main integrator no longer uses 'real'.

1.3.8:
- Improvements to integrator, in particular integrator
  can now express some integrals in terms of elliptic
  integrals.

- More specialized array domains.

- Better handling of cyclotomic polynomials. Roots of
  cyclotomic polynomials are now presented in trigonometric
  form.

- Preliminary support for timeouts (only when using sbcl).

- 'iterate' is now implemented for Spad.

Bug fixes, in particular:

- Fixes for handling of kernels.

- Fixes for 'elt' when handling segments with increments.

- Fixed handling of predicates in rewrite rules.

- Fixed build with clisp.

1.3.7:
- Small improvements to integrator and limits

- Generalized a few domains and packages

- Two new convolutions for quantum probability

- Main FriCAS environment variable is now called FRICAS and main
  executable is called FRICASsys

Bug fixes, in particular:

- Better error detection for numeric elementary functions

- Fixed TeX output of formal derivatives

- Fixed input form of formal derivatives

1.3.6:
Changes:

- Small improvements to integrator and limits

- Generalized a few domains and packages

- Two new convolutions for quantum probability

- Main FriCAS environment variable is now called FRICAS and main
  executable is called FRICASsys

Bug fixes, in particular:

- Better error detection for numeric elementary functions

- Fixed TeX output of formal derivatives

- Fixed input form of formal derivatives

Log message:
*: switch all sourceforge HOMEPAGEs to https

Log message:
Remove explicit use of devel/libffi when building with lang/ecl.

Log message:
Mass-change BUILD_DEPENDS to TOOL_DEPENDS outside mk/.

Almost all uses, if not all of them, are wrong, according to the
semantics of BUILD_DEPENDS (packages built for target available for
use _by_ tools at build-time) and TOOL_DEPEPNDS (packages built for
host available for use _as_ tools at build-time).

No change to BUILD_DEPENDS as used correctly inside buildlink3.

As proposed on tech-pkg:
https://mail-index.netbsd.org/tech-pkg/2023/06/03/msg027632.html

Log message:
fricas: skip PIE check for one file

Makes this package. If you know how to make this file PIE, please do so!

Log message:
revbump for icu and libffi

Log message:
math: Replace RMD160 checksums with BLAKE2s checksums

All checksums have been double-checked against existing RMD160 and
SHA512 hashes