Log Message:
Update to 2.5. Set LICENSE. Fixed HOMEPAGE and MASTER_SITES. Don't hide the
`cd' command. Use INSTALLATION_DIRS instead of INSTALL_DATADIR. Fix line lengths
in do-install phase. Use PKGBASE for INSTALLATION_DIRS. From CHANGES:

- LibWhisker is now licensed under the 'simplied' (2 clause) BSD license.

- Added the {whisker}->{allow_short_reads} option, which will return success
if some body data is read but it is less than the server-advertised content
length.  Thanks to Dave Lodge for the suggestion.

- Thomas Reinke pointed out that cookie_parse() was lowercasing cookie
names, which causes problems if the server is being case-sensitive with
cookie names.

- Fixed a documentation typo for uri_absolute().  Thanks to Sullo for
pointing it out.

- A bug in http_fixup_request() would append a port to the Host header even
if there was already one.  Thanks to Sullo for reporting it.

- Francisco Amato recommended two new anti-IDS modes that involve using
0x0d and 0x0b as request separator/spacers.  IDS modes 'A' and 'B' were
added, respectively.