libc/Kconfig: Break big Kconfig up into separate Kconfig files in each libc subdirectory.

libc/wqueue/Kconfig

@@ -0,0 +1,40 @@
+#
+# For a description of the syntax of this configuration file,
+# see the file kconfig-language.txt in the NuttX tools repository.
+#
+
+if BUILD_PROTECTED || BUILD_KERNEL
+
+comment "User Work Queue Support"
+
+config LIB_USRWORK
+	bool "User mode worker thread"
+	default n
+	depends on !DISABLE_SIGNALS
+	---help---
+		User space work queues can also be made available for deferred
+		processing in the NuttX kernel build.
+
+if LIB_USRWORK
+
+config LIB_USRWORKPRIORITY
+	int "User mode priority worker thread priority"
+	default 100
+	---help---
+		The execution priority of the user-mode priority worker thread.  Default: 100
+
+config LIB_USRWORKPERIOD
+	int "User mode worker thread period"
+	default 100000
+	---help---
+		How often the lower priority worker thread checks for work in units
+		of microseconds. Default: 100*1000 (100 MS).
+
+config LIB_USRWORKSTACKSIZE
+	int "User mode worker thread stack size"
+	default 2048
+	---help---
+		The stack size allocated for the lower priority worker thread.  Default: 2K.
+
+endif # LIB_USRWORK
+endif # BUILD_PROTECTED || BUILD_KERNEL