1st derivs only

Conflicts:
	README.md
	libint-2.7.0-beta.6.tgz

README.md

 # libint
 
+Configured with:
+> ./configure --enable-fma --enable-generic-code  --disable-unrolling \
+>    --enable-eri=1 --enable-eri3=1 --enable-eri2=1 --enable-1body=1 --enable-1body-property-derivs \
+>    --with-max-am=6,5 --with-opt-am=4
+
+built with
+> make export
+
+`--enable-1body-property-derivs` was enabled by altering the `<repo>/configure` file.
+Tasks for `3emultipole` and `sphemultipole` were removed from `<repo>/src/bin/libint/build_libint.cc`.
+After code generation `<export>/include/libint2/engine.impl.h` and `<export>/include/libint2/engine.h`
+were altered to reflect these hacks.
+