Fix error messages about included files.


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1649 b0c55286-4f34-0410-a049-a1e7e93b0762
Update confugure for future gcl-2.6.1x versions.


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1650 b0c55286-4f34-0410-a049-a1e7e93b0762
Eliminate irrationals introduced by Euler substitution.


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1651 b0c55286-4f34-0410-a049-a1e7e93b0762
Factor Trager resultant in appropriate extension.


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1652 b0c55286-4f34-0410-a049-a1e7e93b0762
Fix wrong changes of variables.


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1653 b0c55286-4f34-0410-a049-a1e7e93b0762
Restore pile mode after ')read' or ')compile'.


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1654 b0c55286-4f34-0410-a049-a1e7e93b0762
Makefile fixes.


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1655 b0c55286-4f34-0410-a049-a1e7e93b0762
Update Aldor interface for free Aldor.


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1656 b0c55286-4f34-0410-a049-a1e7e93b0762
Update configure.


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1657 b0c55286-4f34-0410-a049-a1e7e93b0762
Update INSTALL, INSTALL.aldor and release notes.


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1658 b0c55286-4f34-0410-a049-a1e7e93b0762