• Fix a typo in PCRE_CONFIGURE_ENABLE knob
• Remove MSDAV option: this is no longer valid compiler flag in pound, for quite some time
• Do not pass -I to CFLAGS, it is already added (correctly) to CPPFLAGS
• Move initial CONFIGURE_ARGS after GNU_CONFIGURE where it logically belongs
• Move OPTIONS and helper knobs right above .include <bsd.port.options.mk>
• Remove ".if ${PORT_OPTIONS:MDOCS}" guard, not needed in post-staging
• Slightly beautify files/pound.in and pkg-descr while I'm here

PR: 199339
Submitted by: maintainer