configure: fix compilation with glslang 14

The configure check already had fallback for the previous version
of glslang, which had different requirements for flags.
This commit simply moves the flags needed for glslang 13 to the
fallback, while first trying to use new flags for glslang 14.

This drops support for ~3 year old glslang versions, which
I'm not sure had the complete C API we're using anyway.

configure

@@ -6781,10 +6781,10 @@ enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.
 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
 enabled libharfbuzz       && require_pkg_config libharfbuzz harfbuzz hb.h hb_buffer_create
 enabled libglslang && { check_lib spirv_compiler glslang/Include/glslang_c_interface.h glslang_initialize_process \
-                            -lglslang -lMachineIndependent -lOSDependent -lHLSL -lOGLCompiler -lGenericCodeGen \
+                            -lglslang -lMachineIndependent -lGenericCodeGen \
                             -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++ -lm ||
                         require spirv_compiler glslang/Include/glslang_c_interface.h glslang_initialize_process \
-                            -lglslang -lOSDependent -lHLSL -lOGLCompiler \
+                            -lglslang -lMachineIndependent -lOSDependent -lHLSL -lOGLCompiler -lGenericCodeGen \
                             -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++ -lm ; }
 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }