Renamed "mx pta" to "mx r-pkgtest-analyze".

mx.fastr/mx_fastr.py

@@ -500,7 +500,7 @@ _commands = {
     'r-cp' : [r_classpath, '[options]'],
     'pkgtest' : [mx_fastr_pkgs.pkgtest, ['options']],
     'pkgtest-cmp' : [mx_fastr_pkgs.pkgtest_cmp, ['gnur_path fastr_path']],
-    'pta' : [mx_fastr_pkgs.pta, ['options']],
+    'r-pkgtest-analyze' : [mx_fastr_pkgs.pta, ['options']],
     'installpkgs' : [mx_fastr_pkgs.installpkgs, '[options]'],
     'mkgramrd': [mx_fastr_mkgramrd.mkgramrd, '[options]'],
     'rcopylib' : [mx_copylib.copylib, '[]'],