FreeBSD Port: gmake-3.80_2

[Frederick K. Horman]

In FreeBSD 4.11 gmake 3.80_@ no longer compiles, it stops with the 
following errors.

arscan.c: In function `ar_scan':
arscan.c:386: `ARMAG' undeclared (first use in this function)
arscan.c:386: (Each undeclared identifier is reported only once
arscan.c:386: for each function it appears in.)
arscan.c:435: storage size of `member_header' isn't known
arscan.c:536: sizeof applied to an incomplete type
arscan.c:541: sizeof applied to an incomplete type
arscan.c:628: sizeof applied to an incomplete type
arscan.c:700: sizeof applied to an incomplete type
arscan.c: In function `ar_name_equal':
arscan.c:734: storage size of `hdr' isn't known
arscan.c: In function `ar_member_touch':
arscan.c:777: storage size of `ar_hdr' isn't known
arscan.c:792: sizeof applied to an incomplete type
arscan.c:792: sizeof applied to an incomplete type
arscan.c:797: sizeof applied to an incomplete type
arscan.c:797: sizeof applied to an incomplete type
arscan.c:816: sizeof applied to an incomplete type
arscan.c:816: sizeof applied to an incomplete type
*** Error code 1