Fix issues with autotools

v2.5/generators/nlojet++/Makefile.am

v2.5/generators/nlojet++/configure.ac

v2.5/generators/nlojet++/m4/libtool.m4

v2.5/generators/nlojet++/m4/ltoptions.m4

v2.5/generators/nlojet++/m4/ltsugar.m4

v2.5/generators/nlojet++/m4/ltversion.m4

v2.5/generators/nlojet++/m4/lt~obsolete.m4

v2.5/toolkit/Makefile.am

v2.5/toolkit/configure.ac

v2.5/toolkit/m4/libtool.m4

v2.5/toolkit/m4/ltoptions.m4

v2.5/toolkit/m4/ltsugar.m4

v2.5/toolkit/m4/ltversion.m4

v2.5/toolkit/m4/lt~obsolete.m4