Aubit 4GL SVN-Code

Add JSON encoding

use c for dumping instead of 4gl characters

add initial functional index support

fixup aclfgl_get_construct_element to return null for a bad expression

Remove duplicate abort_pressed declaration

When --with-curses=DIR is passed only use the given path

Add more postgresql version variants

Added --enable-alternate-cc option to --help

To avoid long compile delays with bison v3.7.4 generating conflict counterexamples

#ifdef around include of pdflib so file can be used with Haru