[PATCHES] patch contrib/pgcrypto for win32

[Korea PostgreSQL Users' Group]

ï I found that function gen_salt() in contrib/pgcrypto had bug on win32.   I patched contrib/pgcrypto/random.c file.   --------------   $ diff random.orig.c random.c 42a43 > #include <time.h> 87a89,90 >       srandom(time(NULL)); > 89c92 <               *dst++ = random(); --- >               dst[i] = (random() % 255);   plz, check and apply.