3 updates for 5.3rc1

[Duncan Roe]

Hi,

I found the following 3 items. They are addressed by the patch in next email.
Patch is against 2e113467f061587a3475b692d25ca449717834c8 in the devel branch.

1. The new fltexpr loadable builtin doesn't get built.
Need to move it from OTHERPROG to ALLPROG in Makefile.in.

2. `help export` claims that `export -p` prints exported functions.
It does not.

3. `help history` fails to document that you can delete a range.

Cheers ... Duncan.