CHANGE: registered new system ID 0.4.46 as a 64bit Linux using musl compiler (musl.libc.org)

Author: Oldes

make/make.r3

@@ -59,7 +59,8 @@ rebol-tool: to-local-file join %prebuild/r3-make switch/default system/version/4
 			"Linux ARM"                  [0.4.20 %../build/linux-arm/        ""]
 			"Linux ARM bionic (Android)" [0.4.21 %../build/linux-bionic/     ""]
 			"Linux MIPS"                 [0.4.30 %../build/linux-mips/       ""]
-			"Linux x64"                  [0.4.40 %../build/linux-libc-x64/   ""]
+			"Linux libc x64"             [0.4.40 %../build/linux-libc-x64/   ""]
+			"Linux musl x64"             [0.4.46 %../build/linux-musl-x64/   ""]
 		]
 		%-linux  ]
 	5  [%-haiku  ]

src/boot/platforms.reb

@@ -45,6 +45,7 @@ REBOL [
 	21 bionic-arm
 	30 libc6-mips
 	40 libc-x64
+	46 musl-x64
 ]
 
 5 Haiku [

src/tools/systems.reb

@@ -34,6 +34,7 @@ systems: [
 	[0.4.21		"linux_arm"		posix		[LEN +O2 PIE LDL ST1 -LM HID]]	; bionic (Android)
 	[0.4.30		"linux_mips"	posix		[LEN +O2 PIC LDL ST1 -LM HID]]
 	[0.4.40		"linux_x64"		posix		[LEN +O2 PIC LDL ST1 -LM HID L64]] ; core version
+	[0.4.46		"linux_x64_musl"posix		[LEN +O2 PIC LDL ST1 -LM HID L64]]
 	[0.5.75		"haiku"			posix		[LEN +O2 ST1 NWK]]
 	[0.7.02		"freebsd"		posix		[LEN +O1 ST1 -LM]]
 	[0.7.40		"freebsd_x64"	posix		[LEN +O1 ST1 -LM L64]]