FIXED: indirect_value_id not required anymore

Change details:
indirect_value_id was introduced to support the LOAD and STORE operations.
Currently it is sufficient to use value_id instead of indirect_value_id for all cases.
References to indirect_value_id is removed everywhere and value_id is used instead.

Signed-off-by: Arun Prakash Jana <engineerarun@gmail.com>
FIXED: Throw error if IND_MEM encountered in case of instructions other that LOAD and STORE

Signed-off-by: Arun Prakash Jana <engineerarun@gmail.com>
Merge pull request #6 from jarun/dev

FIXED: indirect_value_id not required anymore