Move CFLAGS from LDFLAGS
Remove DRMAA_NO_ERRNO references

DRMAA_NO_ERRNO is not present in the DRMAA standards, and is only used
in the SGE code as a sentinel marker for the end of the other errors.

Because the value is not present in the Torque implementation, it causes
compilation errors.
Add wrapper for SGE/Torque compatability

The DRMAA 1.0 standard and Torque have the following function signature:
int drmaa_get_num_attr_values(drmaa_attr_values_t *, size_t *)

However, SGE defines it as:
int drmaa_get_num_attr_values(drmaa_attr_values_t *, int *)

This patch defines a conditionally compiled wrapper (dependent on the
definition of the TORQUE macro) which casts the int * appropriately.
Add support for Torque to build

Add switch for build.sh script to build package using the Torque
DRMAA implementation.
Modify imports to use repo location
Document Torque usage
Merge branch 'torque' of https://github.com/jbarber/drmaa

Conflicts:
	README.md