fix render layer guid linking w/out font provider layer; eliminate generation number on render handles; sketch out tester scratch program for text drawing performance

src/base/base_core.h

@@ -40,6 +40,12 @@
 # define thread_static __thread
 #endif
 
+#if COMPILER_MSVC
+# define force_inline __forceinline
+#elif COMPILER_CLANG || COMPILER_GCC
+# define force_inline __attribute__((always_inline))
+#endif
+
 ////////////////////////////////
 //~ rjf: Linkage Keyword Macros