OpenSHMEM 1.4 API - tracking issue

[hppritcha]

This issue tracks progress toward making the reference OpenSHMEM implementation compliant with the OpenSHMEM 1.4 Specification.

• Implement the communication context functions. See additions to Section 8.4.
• Implement shmem_sync_all and shmem_sync routines. See Sections 8.8.3 and 8.8.4.
• Add SHMEM_SYNC_SIZE constant. See Section 6.
• Add type-generic interfaces for SHMEM_WAIT.
• Remove volatile qualifiers from certain arguments to shmem_wait and lock API functions. See sections 8.9.1 and 8.11.1.
• Deprecate SMA_ prefixed environment variables and add SHMEM_ prefixed equivalents. See section 7.
• Add C11 _Noreturn to shmem_global_exit. See section 8.1.5
• Deprecate the shmem_wait functions and add shmem_test functions. See section 8.9
• Implement shmem_calloc. See section 8.3.2
• Implement shmem_init_thread and shmem_query_thread. See sections 8.2.1 and 8.2.2.
• Implement new atomic memory operations. See sections 8.5 and 8.7
• Replace complex macro with C99 _Complex definition. See section 8.8.7.
• Check man pages since some APIs variable changes occurred with 1.4.