Revert -O0 for pmap, avoid RAW dependency compilation warning

Disable optimization for pmap.c to prevent RAW assembler dependency
warnings.

If port ever becomes more stable, should revert this and figure out
exactly why only pmap seems to have this issue in the kernel.

- Determine KERN_AS automatically depending on whether OPT_MODULAR is
set or not, in the same way as libcompat.

- Specify OPT_MODULAR in the port Makefile instead of KERN_AS.

Now, KERN_AS=library is used for kernels without module(7) for all ports.

OK christos

branches: 1.5.16;
Define ${LINKSCRIPT} in one place.

${KERN_LDSCRIPT} -> ${KERNLDSCRIPT}

branches: 1.3.2;
Use LINKSCRIPT.

branches: 1.2.54;
Remove unnecessary references to config_time.h.

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.10; 1.1.14; 1.1.20; 1.1.50; 1.1.56; 1.1.64;
Initial import of arch/ia64 sources.
These sources are ported from FreeBSD/ia64 code.
See individual source files for credits.
In addition, code from NetBSD/alpha NetBSD/sparc64,
NetBSD/i386 and NetBSD/amd64 were used as templates,
along with my own additions.

Disable optimization for pmap.c to prevent RAW assembler dependency
warnings.

If port ever becomes more stable, should revert this and figure out
exactly why only pmap seems to have this issue in the kernel.

- Determine KERN_AS automatically depending on whether OPT_MODULAR is
set or not, in the same way as libcompat.

- Specify OPT_MODULAR in the port Makefile instead of KERN_AS.

Now, KERN_AS=library is used for kernels without module(7) for all ports.

OK christos

branches: 1.5.16;
Define ${LINKSCRIPT} in one place.

${KERN_LDSCRIPT} -> ${KERNLDSCRIPT}

branches: 1.3.2;
Use LINKSCRIPT.

branches: 1.2.54;
Remove unnecessary references to config_time.h.

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.10; 1.1.14; 1.1.20; 1.1.50; 1.1.56; 1.1.64;
Initial import of arch/ia64 sources.
These sources are ported from FreeBSD/ia64 code.
See individual source files for credits.
In addition, code from NetBSD/alpha NetBSD/sparc64,
NetBSD/i386 and NetBSD/amd64 were used as templates,
along with my own additions.

- Determine KERN_AS automatically depending on whether OPT_MODULAR is
set or not, in the same way as libcompat.

- Specify OPT_MODULAR in the port Makefile instead of KERN_AS.

Now, KERN_AS=library is used for kernels without module(7) for all ports.

OK christos

branches: 1.5.16;
Define ${LINKSCRIPT} in one place.

${KERN_LDSCRIPT} -> ${KERNLDSCRIPT}

branches: 1.3.2;
Use LINKSCRIPT.

branches: 1.2.54;
Remove unnecessary references to config_time.h.

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.10; 1.1.14; 1.1.20; 1.1.50; 1.1.56; 1.1.64;
Initial import of arch/ia64 sources.
These sources are ported from FreeBSD/ia64 code.
See individual source files for credits.
In addition, code from NetBSD/alpha NetBSD/sparc64,
NetBSD/i386 and NetBSD/amd64 were used as templates,
along with my own additions.