search for: fpng_no_write_support

...b/math/strtod.c is undefined. I added defines with the values used on RHEL4 (derived from cpp -E -dM < /dev/null) and the build then completes. A quick test did not reveal any ill effects. Is there perhaps a better workaround for this? Another little nit I saw was that com32/lib/MCONFIG has -FPNG_NO_WRITE_SUPPORTED, should this not be -DPNG_NO_WRITE_SUPPORTED? I assume it refers to the defines in pngconf.h so to me it looks like a typo. -tgc