Fix C includes for bool, int64_t, and size_t

Author: jimmysoda

source/pdal/pdalc_config.h

@@ -46,8 +46,7 @@ namespace capi
 extern "C"
 {
 #else
-#include <stddef.h>
-#include <stdbool.h>
+#include <stddef.h> // for size_t
 #endif
 /**
  * Retrieves the path to the GDAL data directory.

source/pdal/pdalc_dimtype.h

@@ -45,6 +45,8 @@ namespace capi
 {
 extern "C"
 {
+#else
+#include <stddef.h> // for size_t
 #endif
 /**
  * Returns the number of elements in a dimension type list.

source/pdal/pdalc_pipeline.h

@@ -47,6 +47,7 @@ extern "C"
 {
 #else
 #include <stdbool.h> // for bool
+#include <stddef.h> // for size_t
 #include <stdint.h> // for int64_t
 #endif /* __cplusplus */
 

source/pdal/pdalc_pointlayout.h

@@ -46,6 +46,8 @@ namespace capi
 
 extern "C"
 {
+#else
+#include <stddef.h> // for size_t
 #endif
 /**
  * Returns the list of dimension types used by the provided `layout`.

source/pdal/pdalc_pointview.h

@@ -47,6 +47,7 @@ extern "C"
 {
 #else
 #include <stdbool.h> // for bool
+#include <stddef.h> // for size_t
 #include <stdint.h> // for uint64_t
 #endif
 /**