m68k, arm: Rename arch_string.S to memcpy.S.

As it only contains a memcpy implementation.

src/system/boot/arch/m68k/Jamfile

@@ -8,7 +8,7 @@ for platform in [ MultiBootSubDirSetup amiga_m68k atari_m68k next_m68k ] {
 		;
 
 		local librootStringArchSources =
-			arch_string.S
+			memcpy.S
 		;
 
 		local librootOsArchSources =

src/system/kernel/lib/arch/arm/Jamfile

@@ -27,7 +27,7 @@ KernelMergeObject kernel_lib_posix_arch_$(TARGET_ARCH).o :
 	kernel_longjmp_return.c
 	kernel_setjmp_save_sigs.c
 
-	arch_string.S
+	memcpy.S
 	memset.c
 
 	: $(TARGET_KERNEL_PIC_CCFLAGS)

src/system/kernel/lib/arch/m68k/Jamfile

@@ -29,7 +29,7 @@ KernelMergeObject kernel_lib_posix_arch_$(TARGET_ARCH).o :
 	kernel_longjmp_return.c
 	kernel_setjmp_save_sigs.c
 
-	arch_string.S
+	memcpy.S
 	memset.c
 
 	: $(TARGET_KERNEL_PIC_CCFLAGS)

src/system/libroot/posix/string/arch/arm/Jamfile

@@ -13,7 +13,7 @@ for architectureObject in [ MultiArchSubDirSetup arm ] {
 		SEARCH_SOURCE += [ FDirName $(SUBDIR) $(DOTDOT) generic ] ;
 
 		MergeObject <$(architecture)>posix_string_arch_$(TARGET_ARCH).o :
-			arch_string.S
+			memcpy.S
 			memset.c
 			;
 	}

src/system/libroot/posix/string/arch/m68k/Jamfile

@@ -13,7 +13,7 @@ for architectureObject in [ MultiArchSubDirSetup m68k ] {
 		SEARCH_SOURCE += [ FDirName $(SUBDIR) $(DOTDOT) generic ] ;
 
 		MergeObject <$(architecture)>posix_string_arch_$(TARGET_ARCH).o :
-			arch_string.S
+			memcpy.S
 			memset.c
 			;
 	}