3d4b80da4e
Expose iconv functions as weak symbols as well as their internal remapped #define names. This is necessary for autoconf compatability - on Linux it appears that #include <iconv.h> isn't a link time prerequisite for their version that's built into glibc. Initialize the pthread rwlock. Note that upstream has three separate locks. The file-local static lock appears intentional. I'm using this as a ports-compatible compile-time substitute for converters/libiconv on one of my personal machines.