C nested classes symbol table should be in global space
Tests for C nested classes symbol table not being in global space

Tests for 55bda53145d2898bd4642926b25209c12738e558
Merge branch 'wkalinin-csymbols'

* wkalinin-csymbols:
  Tests for C nested classes symbol table not being in global space
  C nested classes symbol table should be in global space
Turn off %extend nested test for cplusplusout languages
Slight simplification of test-suite build for new out-of-source changes

Provide default SRCDIR and SCRIPTDIR variables in common.mk and override
only where needed.
Update all languages to use SCRIPTDIR

R also to use SCRIPTPREFIX and SCRIPTSUFFIX
Partially fix R out of source test-suite

Fix when there is NOT a runme.R file
gitignore to ignore build directory names
Remove unnecessary make invocation when running test-suite
Add in CPPFLAGS and LDFLAGS to examples/test-suite

- Split current usage of CXXFLAGS into the conventional CPPFLAGS CXXFLAGS and LDFLAGS
- Split current usage of CFLAGS into the conventional CPPFLAGS CFLAGS and LDFLAGS
- This restores 'make whatever CXXFLAGS=-g' which stopped working during
  the recently added suppport for out of source builds.
- LDFLAGS is currently empty, but is there for future use
Remove duplicate test target in CCache Makefile
Neaten up test-suite Makefile regeneration
Fix out of source clean-android-examples
Configured languages display improvement
Merge branch 'kwwette-out-of-src'

* kwwette-out-of-src:
  Configured languages display improvement
  Fix out of source clean-android-examples
  Neaten up test-suite Makefile regeneration
  Remove duplicate test target in CCache Makefile
  Add in CPPFLAGS and LDFLAGS to examples/test-suite
  Remove unnecessary make invocation when running test-suite
  gitignore to ignore build directory names
  Partially fix R out of source test-suite
  Update all languages to use SCRIPTDIR
  Slight simplification of test-suite build for new out-of-source changes
  Allow examples and test-suite to be built out of source tree
  Add "make maintainer-clean" to Travis CI build
  CCache/Makefile.in: fix to allow out of source tree check/install
  Regenerate configured Makefile if Makefile.in or config.status have changed
  Fix segmentation fault in some Javascript examples
  configure.ac: print configured languages at end of configuration
Build Travis CI out of source tree