HGKeeper

Convert to meson build system.
release-2.x.y
2018-11-22, Elliott Sales de Andrade

d132912d7cde

Convert to meson build system.

Essentially backported from default, but with some version changes to
match what's in this branch.

BOOLEAN:VOID

BOOLEAN:STRING

VOID:INT,INT,INT,INT

VOID:INT,INT

VOID:POINTER,POINTER

BOOLEAN:INT,INT

BOOLEAN:INT,INT,INT

BOOLEAN:POINTER,POINTER,POINTER

BOOLEAN:INT,INT,INT,POINTER

VOID:STRING,STRING

VOID:POINTER,BOOLEAN