proc/12-arch-flags: disable -fpermissive by default

We choose to add NOPERMISSIVE instead of removing it completely, because
plenty of (old) C++ projects requires this to build using newer GCC
versions, such as ncurses (C++ bindings and implementation), and
libstdc++ on some architectures.

Author: Cyanoxygen

proc/12-arch-flags.sh

@@ -4,7 +4,7 @@
 
 
 ab_arch_setflags() {
-    local AB_FLAGS_FEATURES=(LTO PERMISSIVE)
+    local AB_FLAGS_FEATURES=(LTO NOPERMISSIVE)
     local AB_FLAGS_TYPES=('' _OPTI _ARCH_BASE _ARCH)
     local flagtypes=(LDFLAGS CFLAGS CPPFLAGS CXXFLAGS OBJCFLAGS OBJCXXFLAGS RUSTFLAGS)
     local features=('')