fixes from Joerg Sonnenberger:

fixes from Joerg Sonnenberger:
http.c is a violation of the ctype(3) interface and an unused function.

test/regress_http.c are incorrect format strings.

test/regress.c uses raise(3) from signal.h.

evdns.c: evdns_error_strings is unused. The GET* macros can eat the
semicolon from the expression. pos is passed in as off_t, so just pass
that down. When assigning negativ values to unsigned variables, an
explicit cast is considered good style.

svn:r367