Make more improvements

This change includes many bug fixes, for the NT polyfills, strings,
memory, boot, and math libraries which were discovered by adding more
tools for recreational programming, such as PC emulation. Lemon has also
been vendored because it works so well at parsing languages.

build/definitions.mk

@@ -155,8 +155,7 @@ MATHEMATICAL =								\
 DEFAULT_CPPFLAGS =							\
 	-DIMAGE_BASE_VIRTUAL=$(IMAGE_BASE_VIRTUAL)			\
 	-nostdinc							\
-	-iquote .							\
-	-include libc/integral/normalize.inc
+	-iquote .
 
 DEFAULT_CFLAGS =							\
 	-std=gnu2x
@@ -217,7 +216,8 @@ cpp.flags =								\
 	$(DEFAULT_CPPFLAGS)						\
 	$(CONFIG_CPPFLAGS)						\
 	$(CPPFLAGS)							\
-	$(OVERRIDE_CPPFLAGS)
+	$(OVERRIDE_CPPFLAGS)						\
+	-include libc/integral/normalize.inc
 
 copt.flags =								\
 	$(TARGET_ARCH)							\
@@ -317,18 +317,20 @@ OBJECTIFY.c99.c = $(CC) $(OBJECTIFY.c.flags) -std=c99 -Wextra -Werror -pedantic-
 OBJECTIFY.c11.c = $(CC) $(OBJECTIFY.c.flags) -std=c11 -Wextra -Werror -pedantic-errors -c
 OBJECTIFY.c2x.c = $(CC) $(OBJECTIFY.c.flags) -std=c2x -Wextra -Werror -pedantic-errors -c
 
-# No-Clobber ABI (clobbers nothing, except rax and flags)
-#
-# This ABI is intended for core library functions that're frequently
-# called by just about everything, e.g. memcpy, malloc, etc. By offering
-# this guarantee, callers can optionally call these functions via asm(),
-# which reduces register allocator pressure at call sites.
-#
-# This makes unrelated caller code faster, but the NCABI functions
-# themselves a tiny bit slower. That's OK, since modern NexGen-32e CPUs
-# seem to have one fifth of their execution engines devoted to pushing
-# and popping, probably so legacy IA-32 code keeps going fast; so we use
-# it to our advantage.
+OBJECTIFY.real.c =							\
+	$(GCC)								\
+	$(OBJECTIFY.c.flags)						\
+	-wrapper build/realify.sh					\
+	-ffixed-r8							\
+	-ffixed-r9							\
+	-ffixed-r10							\
+	-ffixed-r11							\
+	-ffixed-r12							\
+	-ffixed-r13							\
+	-ffixed-r14							\
+	-ffixed-r15							\
+	-c
+
 OBJECTIFY.ncabi.c =							\
 	$(GCC)								\
 	$(OBJECTIFY.c.flags)						\
@@ -350,9 +352,6 @@ OBJECTIFY.ncabi.c =							\
 	-c								\
 	-xc
 
-# Initializer ABI
-#
-# Doesn't clobber RDI and RSI.
 OBJECTIFY.initabi.c =							\
 	$(GCC)								\
 	$(OBJECTIFY.c.flags)						\