Make lua support optional. Leave it enabled right now, even though it
doesn't build, in the hopes that somone will take it in hand; it needs
to be updated to match the new lua version.
Changes 4.6.4:
* NEW Ctrl-Break interrupts fitting run in wgnuplot
* CHANGE treat empty fields in a csv file as "missing" rather than "bad"
* CHANGE allow reference to more than one column header in 'using' or 'title'
* CHANGE install-info is no longer a default "make install" target
* CHANGE if a polar plot is autoscaled, try to place the origin at the center
* FIX svg and canvas terminal mousing of inverted axis coordinates
* FIX emf failed to initialize font correctly on some systems
* FIX timedata columns can now be referred to via column(N) and column("HEAD")
* FIX qt terminal toggling of enhanced text elements in plot with labels
* FIX color/pattern generated for key entries of columnstacked histograms
* FIX hitting ^C twice forces temination of wxt session hung by lost X-server
* FIX win terminal failed to properly adjust plot border after window resize
* FIX several conditions in which macros were not expanded during command input
* FIX promote a string containing only digits to INTGR rather than CMPLX
* FIX 'set grid front' caused failure to initialize location of axis zero point
* FIX very poor precision in mouse coords reported by x11 in -persist mode
* FIX parsing of $# (the number of arguments in a "call"). It's not a comment!
* FIX memory leak of cropped images using pngcairo terminal
* FIX "lc variable" now iterates over linetype colors (not styles) as documented
* FIX rtics were sometimes drawn with length 0
Changes 2.4.37:
Added liblmdb nordahead environment flag
Fixed client tools CLDAP with IPv6
Fixed libldap CLDAP with IPv6
Fixed libldap lock ordering with abandon op
Fixed liblmdb segfault with mdb_cursor_del
Fixed liblmdb when converting to writemap
Fixed liblmdb assert on MDB_NEXT with delete
Fixed liblmdb wasted space on split
Fixed slapd cn=config with olcTLSProtocolMin
Fixed slapd-bdb/hdb optimize index updates
Fixed slapd-ldap chaining with cn=config
Fixed slapd-ldap chaning with controls
Fixed slapd-mdb optimize index updates
Fixed slapd-meta chaining with cn=config
Fixed slapo-constraint to no-op on nonexistent entries
Fixed slapo-dds assert on startup
Fixed slapo-memberof to not replicate internal ops
Fixed slapo-refint to not replicate internal ops
Build Environment
	Fixed slapd-mdb ptr arithmetic on void *s
Documentation
	ldapsearch(1) minor typo fix
	slapd-passwd(5) minor typo fix
Updated graphics/gnuplot to 4.6.4; databases/openldap to 2.4.37
Update py-flask-babelex to 0.9.1.

Changes since 0.8.1 (no changelog provided):
* Allow init_app to be called after package load;
* Merged with upstream (Flask-Babel), python 3 support
Updated www/py-flask-babelex to 0.9.1.
Avoid -fgnu89-inline when using Clang
Fix configure test for expect library.

Also merge patch-aa into patch-af as patching same file.
Don't play with -fno-schedule-insns2 or -fno-strength-reduce.
Don't use -fforce-addr.
Don't use -fno-regmove.
When extracting -R... from the Fortran link line, prefix it with -Wl
before passing it again to CC.
Fix header to be self-contained. Bump boost-headers.
Don't use -frename-registers.
Don't force -fno-defer-pop.
Make the GCC version check specific enough to not match clang.
Fix rpath options to be passed down as linker flags.
Don't force -fno-defer-pop.
When extracting rpath options from the Fortran linker, qualify them with
-Wl before passing them to CC.
Drop -frename-registers. -finline-functions is the default for optimised
builds anyway.