r-gensa: Added 1.1.15. Improved compilation compatability with R and GCC

[emwjacobson]

Bumps the version to 1.1.15 which improves compatibility with newer R versions as well as newer versions of GCC.

Also added a patch for older r-densa versions (1.1.8 and 1.1.7) that are compiled with r@4.4.0: that no longer transitively include R_ext/BLAS.h

	r-gensa@=1.1.15	r-gensa@=1.1.14	r-gensa@=1.1.8	r-gensa@=1.1.7
r@=4.6.1 %gcc@=15.3.0	✅	UnsatisfiableSpecError	UnsatisfiableSpecError	UnsatisfiableSpecError
r@=4.6.1 %gcc@=13.4.0	✅	UnsatisfiableSpecError	UnsatisfiableSpecError	UnsatisfiableSpecError
r@=4.6.1 %gcc@=12.2.0	✅	UnsatisfiableSpecError	UnsatisfiableSpecError	UnsatisfiableSpecError
r@=4.6.1 %gcc@=9.5.0	✅	UnsatisfiableSpecError	UnsatisfiableSpecError	UnsatisfiableSpecError
r@=4.5.3 %gcc@=15.3.0	✅	✅	✅	✅
r@=4.5.3 %gcc@=13.4.0	✅	✅	✅	✅
r@=4.5.3 %gcc@=12.2.0	✅	✅	✅	✅
r@=4.5.3 %gcc@=9.5.0	✅	✅	✅	✅
r@=4.4.3 %gcc@=15.3.0	✅	✅	✅	✅
r@=4.4.3 %gcc@=13.4.0	✅	✅	✅	✅
r@=4.4.3 %gcc@=12.2.0	✅	✅	✅	✅
r@=4.4.3 %gcc@=9.5.0	✅	✅	✅	✅
r@=4.3.3 %gcc@=15.3.0	UnsatisfiableSpecError	UnsatisfiableSpecError	UnsatisfiableSpecError	UnsatisfiableSpecError
r@=4.3.3 %gcc@=13.4.0	UnsatisfiableSpecError	✅	✅	✅
r@=4.3.3 %gcc@=12.2.0	UnsatisfiableSpecError	✅	✅	✅
r@=4.3.3 %gcc@=9.5.0	UnsatisfiableSpecError	✅	✅	✅

Mentioning @w8jcik as they're working on R compatibility in #5998

[w8jcik]

It looks good.

[emwjacobson]

Swapped the conflicts() in favor of a depends_on(), matching the pattern from #6209 (comment)

[w8jcik]

    # Versions <= 1.1.14 use SET_TYPEOF, which was removed from Rinternals.h in r@4.6.0
    conflicts("r@4.6:", when="@:1.1.14")

and

    # Versions <= 1.1.14 use SET_TYPEOF, which was removed from Rinternals.h in r@4.6.0
    depends_on("r@4.6:", type=("build", "run"), when="@1.1.15:")

are not logically eqivalent.

I would leave conflict in this case.

[emwjacobson]

Sounds good, reverted the commit.