The following functions should return size_t:
```
static julong available_memory();
static julong used_memory();
static julong free_memory();
static jlong total_swap_space();
static jlong free_swap_space();
static julong physical_memory();
```
part of the task is to make sure this builds on 32-bit (as long as we still need it)
            
```
static julong available_memory();
static julong used_memory();
static julong free_memory();
static jlong total_swap_space();
static jlong free_swap_space();
static julong physical_memory();
```
part of the task is to make sure this builds on 32-bit (as long as we still need it)
- blocks
- 
                    JDK-8365606 Container code should not be using jlong/julong -           
- Open
 
-         
- causes
- 
                    JDK-8367485 os::physical_memory is broken in 32-bit JVMs when running on 64-bit OSes -           
- Resolved
 
-         
- links to
- 
                     Commit(master)
        openjdk/jdk/d5d94db1 Commit(master)
        openjdk/jdk/d5d94db1
- 
                     Review(master)
        openjdk/jdk/25450 Review(master)
        openjdk/jdk/25450