Log Message:
Updated lang/ocaml to 4.11.1.

Patches for solaris and friends are reinstated (thanks jperkin@)
Also thanks to he@ for testing on powerpc and arm

Highlights for 4.10.0:
* A new best-fit allocator for the major heap which reducing both GC cost
  and memory usage.
* Immutable strings are now enforced at configuration time
* User-defined indexing operators for multidimensional arrays
* Miscellaneous improvements to the manual
* A more precise exhaustiveness check for GADTs
* Many bug fixes

Highlights for 4.11.0:
* Statmemprof: a new statistical memory profiler
* A new instrumented runtime that logs runtime statistics in a standard
  format
* A native backend for the RISC-V architecture
* Improved backtraces that refer to function names
* Suppport for recursive and yet unboxed types
* A quoted extension syntax for ppxs.
* Many quality of life improvements
* Many bug fixes.

4.11.1 is a bugfix release. Full details in the CHANGELOG included with
the distribution.