+ CJ() now uses forder for consistent ordering with setkey, #5375
+ base::sort.int() [i.e. sort.internal] and similar blocked off internally
+ isSortedList no longer used, for consistency all ordering now through forder.c
+ added fsorted in forder.c and hooked up to is.sorted at R level

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/datatable@1149 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
+ is.sorted() accepts list/data.table again (for debugging/test, it isn't exported) but with warning pointing to 'if (length(o<-forder(.))) ...' to remind ourselves in future.  Correct and common usage internally is just vector input, with forder for list/data.table in one step.
+ isSortedList removed at C level

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/datatable@1150 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
binarysearch name change to bmerge

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/datatable@1151 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
File name change sortedmatch.c to bmerge.c

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/datatable@1152 edb9625f-4e0d-4859-8d74-9fd3b1da38cb