Use ssize_t instead of short for line lengths

sthen hit a binary patch containing a 'line' of length > 32kB. This made
the short used for storing the line length wrap and resulted in a buffer
underf

Use ssize_t instead of short for line lengths

sthen hit a binary patch containing a 'line' of length > 32kB. This made
the short used for storing the line length wrap and resulted in a buffer
underflow and segfault. This uses a larger type, which doesn't actually
fix the problem, but makes it much less likely to be hit.

ok florian otto sthen

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Merge existing decls and decls introduced in rev 1.10

Also:
- sort declarations in the same order as definitions in pch.c
- delete an extra pfetch() declaration

ok tobias@

Move RCS Id to the top of the file

Use getline(3) to handle lines longer than 8192 bytes in patch files

Spotted by jsg@ when working on mesa. Diff tested by sthen@ in
a partial i386 bulk. Input from and ok jsg@ millert@

Add native support for ed-style diffs. No need to pledge "proc exec" anymore.

ok deraadt

o fairly major man page reorganization
o add --posix option for strict POSIX conformance
o change filename determination to match GNU patch
Tested by various people, including a full ports build by n

o fairly major man page reorganization
o add --posix option for strict POSIX conformance
o change filename determination to match GNU patch
Tested by various people, including a full ports build by naddy@

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Add license from patch.c to original source files missing a license.

ok deraadt@

More cleanup: sprinkled some const, removed ugly EXTERN/INTERN.h,
some rewriting of code to make it more readable and more KNF.

ok millert@ tedu@ deraadt@

More cleanup.
ok millert@ tedu@

fix header

knf and other cleanup; ok otto

remove junk; ok otto tedu

Support the long options that FSF's patch version has. $OpenBSD$ added

initial import of NetBSD tree