Fix numerous typos in configuration variable names. Tracked down by Alan Carvalho de Assis

include/cxx/cstdlib

@@ -56,7 +56,7 @@ namespace std
 
   // Environment variable support
 
-#ifndef CONFIG_DISABLE_ENIVRON
+#ifndef CONFIG_DISABLE_ENVIRON
   using ::get_environ_ptr;
   using ::getenv;
   using ::putenv;

include/nuttx/net/net.h

@@ -217,7 +217,7 @@ void net_initialize(void);
 
 /****************************************************************************
  * Critical section management.  The NuttX configuration setting
- * CONFIG_NET_NOINT indicates that uIP not called from the interrupt level.
+ * CONFIG_NET_NOINTS indicates that uIP not called from the interrupt level.
  * If CONFIG_NET_NOINTS is defined, then these will map to semaphore
  * controls.  Otherwise, it assumed that uIP will be called from interrupt
  * level handling and these will map to interrupt enable/disable controls.

include/stdlib.h

@@ -76,7 +76,7 @@
  * can be used in its place.
  */
 
-#ifndef CONFIG_DISABLE_ENIVRON
+#ifndef CONFIG_DISABLE_ENVIRON
 # define environ get_environ_ptr()
 #endif
 
@@ -120,7 +120,7 @@ int       rand(void);
 
 /* Environment variable support */
 
-#ifndef CONFIG_DISABLE_ENIVRON
+#ifndef CONFIG_DISABLE_ENVIRON
 FAR char **get_environ_ptr( void );
 FAR char *getenv(FAR const char *name);
 int       putenv(FAR const char *string);

include/sys/syscall.h

@@ -362,7 +362,7 @@
 #  define SYS_pthread_setspecific      (__SYS_pthread+26)
 #  define SYS_pthread_yield            (__SYS_pthread+27)
 
-#  ifndef CONFIG_DISABLE_SIGNAL
+#  ifndef CONFIG_DISABLE_SIGNALS
 #    define SYS_pthread_cond_timedwait (__SYS_pthread+28)
 #    define SYS_pthread_kill           (__SYS_pthread+29)
 #    define SYS_pthread_sigmask        (__SYS_pthread+30)