Modernize LT_INIT call for libtool 2.2+
Die if xml2-config or xslt-config point at non executable files

Patch from Michael Stahl - thanks

Fixes Issue #0000534
http://bugs.librdf.org/mantis/view.php?id=535
Switch libxml and libcurl to use PKG_PROG_PKG_CONFIG and PKG_CHECK_MODULES

Preference is still to xml2-config and curl-config unless
--with-curl-config=no --with-xml2-config=no are used
Update tmpls
#changes
ChangeLog.13 for 2012
Recommend flex 2.5.36

Remove prototypes for column methods that flex 2.5.36+ provides now.
Remove prototypes for column methods that flex 2.5.36+ provides now.
Fix declaration of 'i' in generated flex <name>__scan_bytes function
More travis-ci.org config
changes
Do an update first
Add yajl and run tests
Add automake option subdir-objects to keep librdfa building
Add gitignore for objs in librdfa/
Revert 53664470aca6c3393fe05724653c7e45d0c52588
Import latest Turtle 2013 tests
Add .nt versions of shared result files
add missing LITERAL_LONG2_with_UTF8_boundaries.ttl
Updated for Turtle 2013 tests