gfortran to avoid "'-Wno-multichar' is valid for C/C++/ObjC/ObjC++ bu… (#13250)

* gfortran to avoid "'-Wno-multichar' is valid for C/C++/ObjC/ObjC++ but not for fortran"

* Bump up the REVISION of sys-devel/gcc/gcc-13.3.0_2023_08_10.recipe

sys-devel/gcc/gcc-13.3.0_2023_08_10.recipe

@@ -5,7 +5,7 @@ HOMEPAGE="https://gcc.gnu.org/"
 COPYRIGHT="1988-2023 Free Software Foundation, Inc."
 LICENSE="GNU GPL v3
 	GNU LGPL v3"
-REVISION="5"
+REVISION="6"
 gccVersion="${portVersion%%_*}"
 SOURCE_URI="https://ftpmirror.gnu.org/gcc/gcc-$gccVersion/gcc-$gccVersion.tar.xz
 	https://ftp.gnu.org/gnu/gcc/gcc-$gccVersion/gcc-$gccVersion.tar.xz"

sys-devel/gcc/patches/gcc-13.3.0_2023_08_10.patchset

@@ -5261,7 +5261,7 @@ index 0000000..88adc25
 +   registers, and the performance impact is too high. */
 +#define HAIKU_CC1_SPEC \
 +  "%{fpic|fPIC|fpie|fPIE|fno-pic|fno-PIC|fno-pie|fno-PIE:;:-fPIC} \
-+   %{!Wmultichar: -Wno-multichar} %(cc1_cpu) %{profile:-p}"
++   %{!,f95:%{!,f77:%{!,f95-cpp-input:%{!,f77-cpp-input:%{!Wmultichar: -Wno-multichar}}}}} %(cc1_cpu) %{profile:-p}"
 +#undef CC1_SPEC
 +#define CC1_SPEC \
 +  HAIKU_CC1_SPEC " %{!fomit-frame-pointer: -fno-omit-frame-pointer}"