fixed ⎕ES related bugs

git-svn-id: http://svn.savannah.gnu.org/svn/apl/trunk@372 bd74f7bd-1a55-4bac-9fab-68015b139e80
fixed EACH bug

git-svn-id: http://svn.savannah.gnu.org/svn/apl/trunk@373 bd74f7bd-1a55-4bac-9fab-68015b139e80
updated README-1-prerequisites

git-svn-id: http://svn.savannah.gnu.org/svn/apl/trunk@374 bd74f7bd-1a55-4bac-9fab-68015b139e80
fixed equal of complex numbers and ⎕TF

git-svn-id: http://svn.savannah.gnu.org/svn/apl/trunk@375 bd74f7bd-1a55-4bac-9fab-68015b139e80
fixed equal of complex numbers

git-svn-id: http://svn.savannah.gnu.org/svn/apl/trunk@376 bd74f7bd-1a55-4bac-9fab-68015b139e80