kernel: separate headers into kernel and user headers

all kernel headers have been moved from include/mango to include/kernel
and include definitions that are only relevant to kernel-space.

any definitions that are relevant to both kernel- and user-space
(i.e. type definitions, syscall IDs) have been moved to
include/mango within libmango.

libc/string/memmove.c

@@ -1,5 +1,5 @@
 #include <stdint.h>
-#include <mango/libc/string.h>
+#include <kernel/libc/string.h>
 
 static void *memcpy_r(void *dest, const void *src, size_t sz)
 {

libc/string/memset.c

@@ -2,12 +2,12 @@
 
 void *memset(void *str, int c, size_t n)
 {
-    unsigned char val = (unsigned char)c;
-    unsigned char *buf = str;
+	unsigned char val = (unsigned char)c;
+	unsigned char *buf = str;
 
-    for (size_t i = 0; i < n; i++) {
-        buf[i] = val;
-    }
+	for (size_t i = 0; i < n; i++) {
+		buf[i] = val;
+	}
 
-    return str;
+	return str;
 }

libc/string/strcat.c

@@ -1,4 +1,4 @@
-#include <mango/libc/string.h>
+#include <kernel/libc/string.h>
 
 char *strcat(char *dest, const char *src) {
     size_t start = strlen(dest), i = 0;

libc/string/strcmp.c

@@ -1,19 +1,21 @@
 int strcmp(const char *s1, const char *s2)
 {
-    int i;
-    for (i = 0; s1[i] == s2[i]; i++)
-        if (s1[i] == '\0')
-            return 0;
+	int i;
+	for (i = 0; s1[i] == s2[i]; i++)
+		if (s1[i] == '\0')
+			return 0;
 
-    return s1[i] - s2[i];
+	return s1[i] - s2[i];
 }
 
 int strncmp(const char *s1, const char *s2, unsigned long n)
 {
-    for (; n > 0; s1++, s2++, --n)
-        if (*s1 != *s2)
-            return ((*(unsigned char *)s1 < *(unsigned char *)s2) ? -1 : 1);
-        else if (*s1 == '\0')
-            return 0;
-    return 0;
+	for (; n > 0; s1++, s2++, --n)
+		if (*s1 != *s2)
+			return ((*(unsigned char *)s1 < *(unsigned char *)s2)
+			                ? -1
+			                : 1);
+		else if (*s1 == '\0')
+			return 0;
+	return 0;
 }

libc/string/strcpy.c

@@ -1,4 +1,4 @@
-#include <mango/libc/string.h>
+#include <kernel/libc/string.h>
 
 char *strcpy(char *output, const char *input)
 {

libc/string/strlen.c

@@ -1,10 +1,11 @@
-#include <mango/libc/string.h>
+#include <kernel/libc/string.h>
 
-size_t strlen(const char *str) {
+size_t strlen(const char *str)
+{
 	size_t res = 0;
 	while (str[res]) {
 		res++;
 	}
-	
+
 	return res;
 }

libc/string/strrchr.c

@@ -1,4 +1,4 @@
-#include <mango/libc/string.h>
+#include <kernel/libc/string.h>
 
 char *strrchr(const char *str, int c) {
     size_t len = strlen(str);

libc/string/strtok.c

@@ -1,5 +1,5 @@
 #include <limits.h>
-#include <mango/libc/string.h>
+#include <kernel/libc/string.h>
 
 #define ALIGN (sizeof(size_t))
 #define ONES ((size_t)-1 / UCHAR_MAX)