src/core1: renamed matrix math library

umbenannt:      include/ml/mtx.h -> include/core1/mlmtx.h
        umbenannt:      src/core1/code_13990.c -> src/core1/mlmtx.c

decompressed.pal.yaml

@@ -171,7 +171,7 @@ segments:
   - [0xF50010, c, stub_13640]
   - [0xF50050, c, sprite]
   - [0xF500a0, c, overlaymanager]
-  - [0xF50360, c, code_13990]   
+  - [0xF50360, c, mlmtx]   
   - [0xF51FC0, hasm, code_155F0]
   - [0xF52000, c, overlay]
   - [0xF52140, c, depthbuffer]
@@ -380,7 +380,7 @@ segments:
   - [0xF74DE0, .data, pfsmanager]
   - [0xF74DF0, .data, code_11AC0]
   - [0xF75380, .data, overlaymanager]
-  - [0xF75620, .data, code_13990]
+  - [0xF75620, .data, mlmtx]
   - [0xF75630, .data, code_15B30]
   - [0xF75640, .data, memory]
   - [0xF75670, .data, lookup]
@@ -421,7 +421,7 @@ segments:
   - [0xF77210, .rodata, code_11AC0]
   - [0xF77220, .rodata, rumblemanager]
   - [0xF77230, .rodata, overlaymanager]
-  - [0xF772B0, .rodata, code_13990]
+  - [0xF772B0, .rodata, mlmtx]
   - [0xF772D0, .rodata, ml]
   - [0xF773D0, .rodata, code_1BE90]
   - [0xF77400, .rodata, code_1D5D0]
@@ -472,7 +472,7 @@ segments:
   - [0xF791D0, .bss, rumblemanager]
   - [0xF791D0, .bss, stub_13640]
   - [0xF791D0, .bss, overlaymanager]
-  - [0xF791D0, .bss, code_13990]
+  - [0xF791D0, .bss, mlmtx]
   - [0xF791D0, .bss, depthbuffer]
   - [0xF791D0, .bss, code_15B30]
   - [0xF791D0, .bss, memory]